;;; Exercise 1.1.  Below is a sequence of expressions. What
;;; is the result printed by the interpreter in response to each
;;; expression? Assume that the sequence is to be evaluated in
;;; the order in which it is presented.

10
; 10

(+ 5 3 4)
; 12

(- 9 1)
; 9

(/ 6 2)
; 3

(+ (* 2 4) (- 4 6))
; 6

(define a 3)
;

(define b (+ a 1))
;

(+ a b (* a b))
; 19

(= a b)
; #f

(if (and (> b a) (< b (* a b)))
    b
    a)
; 4

(cond ((= a 4) 6)
      ((= b 4) (+ 6 7 a))
      (else 25))
; 16

(+ 2 (if (> b a) b a))
; 6

(* (cond ((> a b) a)
         ((< a b) b)
         (else -1))
   (+ a 1))
; 16
